ACDelco Engine Coolant Thermostat Housing Water Outlet

The ACDelco engine coolant thermostat housing, also called a water outlet or thermostat housing, is a replacement part for the engine cooling system. It holds the thermostat and gives coolant a sealed path out of the engine. This helps the engine reach operating temperature and stay there.

Key Features:

• Replaces the original thermostat housing or water outlet in the engine cooling system
• Designed to seat the thermostat securely and keep the coolant passage sealed
• Built to resist the heat, pressure and coolant exposure found in engine cooling systems
• Backed by ACDelco, the parts brand of General Motors, which supplies OE-quality replacement parts

A cracked, corroded or leaking thermostat housing can cause coolant loss, overheating and poor engine performance. Replacing it restores a reliable seal and steady coolant flow. Replacing the thermostat and gasket or seal at the same time is common practice. Choose the specific part number that matches your application.